/*
 * This file is part of the Owl Positioning System (OwlPS).
 * OwlPS is a project of the University of Franche-Comte
 * (Université de Franche-Comté), France.
 *
 * Copyright © Université de Franche-Comté 2007-2012.
 *
 * Corresponding author: Matteo Cypriani <mcy@lm7.fr>
 *
 ***********************************************************************
 *
 * This software is governed by the CeCILL license under French law and
 * abiding by the rules of distribution of free software. You can use,
 * modify and/or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL:
 * http://www.cecill.info
 *
 * As a counterpart to the access to the source code and rights to copy,
 * modify and redistribute granted by the license, users are provided
 * only with a limited warranty and the software's authors, the holder
 * of the economic rights, and the successive licensors have only
 * limited liability.
 *
 * In this respect, the user's attention is drawn to the risks
 * associated with loading, using, modifying and/or developing or
 * reproducing the software by the user in light of its specific status
 * of free software, that may mean that it is complicated to manipulate,
 * and that also therefore means that it is reserved for developers and
 * experienced professionals having in-depth computer knowledge. Users
 * are therefore encouraged to load and test the software's suitability
 * as regards their requirements in conditions enabling the security of
 * their systems and/or data to be ensured and, more generally, to use
 * and operate it in the same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 *
 ***********************************************************************
 */


#include "inputdatareader.hh"
#include "accesspointsreadercsv.hh"
#include "mobilesreadercsv.hh"
#include "topologyreadercsv.hh"
#include "inputcsv.hh"
#include "calibrationrequest.hh"
#include "configuration.hh"
#include "posexcept.hh"
#include "stock.hh"

#include <iostream>

using namespace std ;



/* *** Constructors *** */


InputDataReader::InputDataReader()
{
  read_access_points() ;
  read_mobiles() ;
  read_topology() ;
  read_reference_points() ;
}


InputDataReader::~InputDataReader()
{
  for (vector<InputMedium*>::const_iterator i =
         reference_points_media.begin() ;
       i != reference_points_media.end() ; ++i)
    delete *i ;
  reference_points_media.clear() ;
}



/* *** Access points *** */


void InputDataReader::read_access_points()
{
  if (! Configuration::is_configured("data-input.ap-medium"))
    return ;

  initialise_access_points_media() ;

  if (Configuration::is_configured("verbose"))
    cerr << Stock::nb_aps() << " access points stored.\n" ;
}


void InputDataReader::initialise_access_points_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.ap-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_access_points_csv() ;

      else
        throw bad_configuration(
          "Access points input medium type unknown \""+ *i +"\"") ;
    }
}


void InputDataReader::initialise_access_points_csv()
{
  if (! Configuration::is_configured("data-input.ap-csv-file"))
    throw missing_configuration(
      "No input CSV file specified for access points") ;

  AccessPointsReaderCSV(
    Configuration::string_value("data-input.ap-csv-file")) ;
}



/* *** Mobiles *** */


void InputDataReader::read_mobiles()
{
  if (! Configuration::is_configured("data-input.mobile-medium"))
    return ;

  initialise_mobiles_media() ;

  if (Configuration::is_configured("verbose"))
    cerr << Stock::nb_mobiles() << " mobiles stored.\n" ;
}


void InputDataReader::initialise_mobiles_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.mobile-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_mobiles_csv() ;

      else
        throw bad_configuration(
          "Mobiles' input medium type unknown \""+ *i +"\"") ;
    }
}


void InputDataReader::initialise_mobiles_csv()
{
  if (! Configuration::is_configured("data-input.mobile-csv-file"))
    throw missing_configuration(
      "No input CSV file specified for mobiles") ;

  MobilesReaderCSV(
    Configuration::string_value("data-input.mobile-csv-file")) ;
}



/* *** Topology *** */


void InputDataReader::read_topology()
{
  if (! Configuration::is_configured("data-input.topology-medium"))
    return ;

  initialise_topology_media() ;

  if (Configuration::is_configured("verbose"))
    {
      cerr
          << Stock::nb_buildings() << " buildings stored.\n"
          << Stock::nb_waypoints() << " waypoints stored.\n" ;
    }
}


void InputDataReader::initialise_topology_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.topology-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_topology_csv() ;

      else
        throw bad_configuration(
          "Topology input medium type unknown \""+ *i +"\"") ;
    }
}


void InputDataReader::initialise_topology_csv()
{
  if (! Configuration::is_configured("data-input.areas-csv-file"))
    throw missing_configuration(
      "No topology input CSV file specified for areas") ;

  if (! Configuration::is_configured("data-input.waypoints-csv-file"))
    throw missing_configuration(
      "No topology input CSV file specified for waypoints") ;

  TopologyReaderCSV(
    Configuration::string_value("data-input.areas-csv-file"),
    Configuration::string_value("data-input.waypoints-csv-file")) ;
}



/* *** Reference points *** */


void InputDataReader::read_reference_points()
{
  if (! Configuration::is_configured("data-input.reference-points-medium"))
    return ;

  initialise_reference_points_media() ;
  read_from_reference_points_media() ;

  if (Configuration::is_configured("verbose"))
    cerr
        << Stock::nb_calibration_requests()
        << " calibration requests stored, in\n"
        << Stock::nb_reference_points() << " reference points.\n" ;

}


void InputDataReader::initialise_reference_points_media()
{
  const vector<string> &media_names =
    Configuration::string_vector_value("data-input.reference-points-medium") ;

  for (vector<string>::const_iterator i = media_names.begin() ;
       i != media_names.end() ; ++i)
    {
      if (*i == "CSV")
        initialise_reference_points_csv() ;

      else
        throw bad_configuration(
          "Reference points input medium type unknown \""+ *i +"\"") ;
    }
}


void InputDataReader::initialise_reference_points_csv()
{
  if (! Configuration::is_configured("data-input.reference-points-csv-file"))
    throw missing_configuration(
      "No reference points input CSV file is configured") ;

  reference_points_media.push_back(
    new InputCSV(
      Configuration::string_value("data-input.reference-points-csv-file"))) ;
}


void InputDataReader::read_from_reference_points_media()
{
  for (vector<InputMedium*>::const_iterator i =
         reference_points_media.begin() ;
       i != reference_points_media.end() ; ++i)
    {
      while (! (*i)->eof())
        {
          const Request &request = (*i)->get_next_request() ;

          if (! request)
            continue ;

          CalibrationRequest *calibration_request =
            dynamic_cast<CalibrationRequest*>(
              const_cast<Request*>(&request)) ;
          if (calibration_request == NULL)
            cerr << "Warning! Invalid calibration request at line "
                 << (*i)->get_current_line_nb() << endl ;
          else
            Stock::store_calibration_request(*calibration_request) ;
        }
    }
}